/**
 * @param {number[]} nums
 * @return {number}
 */
var massage = function(nums) {
  if (nums.length === 0) return 0
  if (nums.length === 1) return nums[0]
  let dp = []
  dp[0] = nums[0]
  dp[1] = Math.max(nums[0], nums[1])
  for (let i = 2; i < nums.length; i++) {
    dp[i] = Math.max(nums[i] + dp[i-2], dp[i-1])
  }
  return dp[nums.length - 1]
};

console.log(massage([1, 2, 3, 1]))
console.log(massage([2, 7, 9, 3, 1]))